This works fine, the laptop goes to sleep. Power button starts blinking. Now, when I wake-it-up (press the power button), it comes to life but the screen stays black. I need to keep to power button pressed for a few seconds and then it switches off. I tried this on 3 different laptops (all a bit older):

Sony Vaio - PCG-882M

Toshiba - Satellite Pro A200 (PSAE4E-04L0251G)

Dell - Latitude E6400

acapid is running (and seems to work, checked acapi_listen)

I also looked in the BIOS of each machine, but there is not much related to ACAPI that i can set there.

When I first tried suspend to ram it didn't work, which is why I created the suspend-utils extension.

At some point the vanilla kernel suspend to ram started to work, but now with tc-8.x and my dell e7240 it wakes up with a blank screen with no apparent way to fix it (in the back of my mind there is a way, but I've forgotten).

At some point the vanilla kernel suspend to ram started to work, but now with tc-8.x and my dell e7240 it wakes up with a blank screen with no apparent way to fix it (in the back of my mind there is a way, but I've forgotten).

If i understand correctly its basically a kernel issue (not a distro. issue)? So changing distro. will probably not change anything?

Do you know which version of TC has the vanilla kernel? I tried TC5 and TC8 but both give problems.